Java 异常练习

package lianxi6;

import java.util.Scanner;

public class lianxi {

	public static void main(String[] args) {
		 Scanner sca=new Scanner(System.in);
		 try{

	        System.out.print("请输入数字的个数：");

	        int s=sca.nextInt();

	        int arr[]=new int[s];

	        for (int i=0;i<arr.length;i++)

	        {

	            System.out.println("请输入第"+(i+1)+"个数字");

	            arr[i]=sca.nextInt();

	        }
		 

	        for (int i=0;i<arr.length-1;i++)

	        {

	            for (int j=i+1;j<arr.length;j++)

	                {

	                    if(arr[i]<arr[j])

	                    {

	                        int a=arr[j];

	                        arr[j]=arr[i];

	                        arr[i]=a;

	                    }

	                }

	        }
		 
		 

	        for (int t:arr)

	        {

	            System.out.print("   "+t);

	        }
		 }
		 catch(Exception ex)
		 {
			 ex.printStackTrace();
			 System.out.println("运行出现异常"+ex.getMessage());
		 }

	    }

	}